Abstract
Background and Aim: Trypsin acting at protease-activated receptor 2 (PAR2) contributes to a progression of malignant tumors. An abnormal DNA methylation has been recognized as an important molecular mechanism for the genesis of various types of cancers. We attempted to clarify the relationship between the promoter methylation of PAR2 and gastric cancer. Method: We estimated the methylation of the PAR2 promoter in both antral non-cancerous mucosa and cancer lesions in 94 patients with gastric cancer. We employed a methylation-specific PCR method. Results: Regarding the methylation ratio (MR) of antral-non-cancerous mucosa, no significant difference was despite among gender, age and Helicobacter pylori infection status, whereas MR increased rising inflammation scores. The MR of cancer lesions was significantly lower than that of antral non-cancerous mucosa. This finding was not dependent on tumor staging, but also histological classification. In venous invasion, lymph node metastasis, or peritoneal dissemination negative cases, this significant lower MR was also seen. Conclusion: The promoter methylation of PAR2 seems to be increased with a progression of chronic inflammation and has an inhibitory effect on carcinogenesis of the stomach.
| Original language | English |
|---|---|
| Pages (from-to) | 943-948 |
| Number of pages | 6 |
| Journal | Journal of Gastroenterology and Hepatology (Australia) |
| Volume | 22 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 06-2007 |
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All Science Journal Classification (ASJC) codes
- Hepatology
- Gastroenterology
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Promoter hypomethylation of protease-activated receptor 2 associated with carcinogenesis in the stomach. / Arisawa, Tomiyasu; Tahara, Tomomitsu; Shibata, Tomoyuki; Nagasaka, Mitsuo; Nakamura, Masakatsu; Kamiya, Yoshio; Fujita, Hiroshi; Takagi, Tamaki; Hasegawa, Shin; Wang, Fang Yu; Hirata, Ichiro; Nakano, Hiroshi.
In: Journal of Gastroenterology and Hepatology (Australia), Vol. 22, No. 6, 06.2007, p. 943-948.Research output: Contribution to journal › Article
TY - JOUR
T1 - Promoter hypomethylation of protease-activated receptor 2 associated with carcinogenesis in the stomach
AU - Arisawa, Tomiyasu
AU - Tahara, Tomomitsu
AU - Shibata, Tomoyuki
AU - Nagasaka, Mitsuo
AU - Nakamura, Masakatsu
AU - Kamiya, Yoshio
AU - Fujita, Hiroshi
AU - Takagi, Tamaki
AU - Hasegawa, Shin
AU - Wang, Fang Yu
AU - Hirata, Ichiro
AU - Nakano, Hiroshi
PY - 2007/6
Y1 - 2007/6
N2 - Background and Aim: Trypsin acting at protease-activated receptor 2 (PAR2) contributes to a progression of malignant tumors. An abnormal DNA methylation has been recognized as an important molecular mechanism for the genesis of various types of cancers. We attempted to clarify the relationship between the promoter methylation of PAR2 and gastric cancer. Method: We estimated the methylation of the PAR2 promoter in both antral non-cancerous mucosa and cancer lesions in 94 patients with gastric cancer. We employed a methylation-specific PCR method. Results: Regarding the methylation ratio (MR) of antral-non-cancerous mucosa, no significant difference was despite among gender, age and Helicobacter pylori infection status, whereas MR increased rising inflammation scores. The MR of cancer lesions was significantly lower than that of antral non-cancerous mucosa. This finding was not dependent on tumor staging, but also histological classification. In venous invasion, lymph node metastasis, or peritoneal dissemination negative cases, this significant lower MR was also seen. Conclusion: The promoter methylation of PAR2 seems to be increased with a progression of chronic inflammation and has an inhibitory effect on carcinogenesis of the stomach.
AB - Background and Aim: Trypsin acting at protease-activated receptor 2 (PAR2) contributes to a progression of malignant tumors. An abnormal DNA methylation has been recognized as an important molecular mechanism for the genesis of various types of cancers. We attempted to clarify the relationship between the promoter methylation of PAR2 and gastric cancer. Method: We estimated the methylation of the PAR2 promoter in both antral non-cancerous mucosa and cancer lesions in 94 patients with gastric cancer. We employed a methylation-specific PCR method. Results: Regarding the methylation ratio (MR) of antral-non-cancerous mucosa, no significant difference was despite among gender, age and Helicobacter pylori infection status, whereas MR increased rising inflammation scores. The MR of cancer lesions was significantly lower than that of antral non-cancerous mucosa. This finding was not dependent on tumor staging, but also histological classification. In venous invasion, lymph node metastasis, or peritoneal dissemination negative cases, this significant lower MR was also seen. Conclusion: The promoter methylation of PAR2 seems to be increased with a progression of chronic inflammation and has an inhibitory effect on carcinogenesis of the stomach.
UR - http://www.scopus.com/inward/record.url?scp=34250325945&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=34250325945&partnerID=8YFLogxK
U2 - 10.1111/j.1440-1746.2007.04847.x
DO - 10.1111/j.1440-1746.2007.04847.x
M3 - Article
C2 - 17517084
AN - SCOPUS:34250325945
VL - 22
SP - 943
EP - 948
JO - Journal of Gastroenterology and Hepatology (Australia)
JF - Journal of Gastroenterology and Hepatology (Australia)
SN - 0815-9319
IS - 6
ER -